Half-spoolie metal seal integral with tube
A spoolie for sealing a tube passing through an air gap or other interruption within a high temperature operating environment. The apparatus and method allow for a sealing service pathway between areas of differential temperature while allowing for relative movement consistent with thermal expansion and contraction.
1. A spoolie metal seal with integral tube comprises:
a service tube comprising a first portion and a second portion, said service tube extending across an air gap and defining a service path between relatively higher temperature services and relatively lower temperature services;
a seal disposed about said service tube closer to said relatively lower temperature service; and,
a spoolie seal engaging an annular surface of said service tube, said spoolie seal engaging said service tube closer to said higher temperature service;
said spoolie seal being a double spherical structure or further comprising a piston ring engaging said spoolie seal.
2. The spoolie metal seal with integral tube of claim 1 , said service tube being of constant diameter.
3. The spoolie metal seal with integral tubes of claim 1 , said service tube being of at least first and second diameters.
4. The spoolie metal seal with integral tubes of claim 1 , said spoolie seal being substantially hollow and allowing said service tube to pass through said spoolie seal.
5. The spoolie metal seal with integral tubes of claim 4 , said spoolie seal having a curvilinear shape.
6. The spoolie metal seal with integral tube of claim 4 , said spoolie including a spoolie arm having at least a portion which is linearly extending toward said service tube.
7. The spoolie metal seal with integral tube of claim 6 further comprising an extension from said linearly extending portion.
8. The spoolie metal seal with integral tube of claim 1 , said spoolie seal being a half spoolie metal seal.
9. The spoolie metal seal with integral tube of claim 1 , said spoolie seal brazed to said service tube.
10. A spoolie metal seal with integral tube comprises:
a service tube comprising a first portion and a second portion, said service tube extending across an air gap and defining a service path between relatively higher temperature services and relatively lower temperature services;
a seal disposed about said service tube closer to said relatively lower temperature service; and,
a spoolie seal engaging an annular surface of said service tube, said spoolie seal engaging said service tube closer to said higher temperature service;
said seal having a slidable interference fit with said service tube, or said seal being an o-ring, or said seal being one of a screw on fitting, a press fitting or a face seal.
11. A spoolie metal seal with integral tube, comprising:
a service tube capable of positioning across an air gap, said service tube defining a service path between a relatively higher temperature portion and a relatively lower temperature portion;
said service tube having a first portion corresponding to said higher temperature portion and a second portion corresponding to said lower temperature portion;
an seal disposed on said tube at said second portion; and,
a spoolie seal engaging said first portion of said tube;
said spoolie being a double spherical structure, or being an arm extending radially inwardly relative to said tube with a piston ring retaining said arm.
12. The spoolie metal seal with integral tube of claim 11 , said seal engaging a sleeve disposed about said service tube.
13. The spoolie metal seal with integral tube of claim 11 , said seal being an O-ring, said O-ring disposed in a groove located along said service tube.